Use of protozoa to control biomass in biotrickling filters for waste air treatment


Journal Article

The use of protozoa preying upon bacteria to decrease the rate of biomass accumulation in toluene-degrading biotrickling filters is investigated. As compared to a control filter without added protozoa, the filter enriched with a consortium of protozoa showed improved stability and better performance. Under standard operating conditions, toluene elimination capacities of the control filter and the filter enriched with protozoa were 33 and 35 g/m3.h, respectively. Toluene degradation rates reached a maximum at toluene concentrations exceeding 2.5 g/m3, with maximal toluene elimination capacities of 75 and 85 g/m3.h, respectively. At the same time, biomass accumulation in the biotrickling filter enriched with protozoa was slower.

Duke Authors

Cited Authors

  • Cox, HHJ; Deshusses, MA

Published Date

  • December 1, 1997

Published In

  • Proceedings of the Air &Amp; Waste Management Association'S Annual Meeting &Amp; Exhibition

Citation Source

  • Scopus